Figure 4: Interhemispheric gamma coherence is higher in ENR.
From: Experience enhances gamma oscillations and interhemispheric asymmetry in the hippocampus
(a) Example traces of simultaneously measured left (L) and right (R) CA1 s.r. slow gamma oscillations in different rearing conditions. Dotted lines indicate the bottom peak of right-side gamma oscillations. The interhemispheric gamma phase was computed for each gamma cycle by Hilbert transformation, and circularly subtracted to obtain the phase difference. The phase-difference histograms of gamma LFPs for 10 s are plotted in the right panels. The σ value denotes the circular s.d. (b) Interhemispheric coherence spectrum of ISO (black) and ENR (red) in CA1 s.r. There is a significant difference between ISO and ENR in the gamma range (**P<0.01, t-test, NISO=10, NENR=10). (c) Similar plot as (b) in CA1 s.l-m. There is a significant difference between ISO and ENR (**P<0.01, t-test, NISO=10, NENR=10) in the slow gamma range. (d) Interhemispheric slow gamma coherence comparison of ENR versus ENR+ket (**P<0.01, t-test, NENR=10, NENR+ket=8). Each dot represents an animal. Error bars represent s.e.m.
